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THE present membership of the Institution of Structural Engineers, and its comparison with the figures for the two previous years, is shown in the following table:-
UNDER the designation “Bauxite, or Aluminous Cement" may be grouped cements manufactured by burning in nearly equal proportions lime and bauxite until fusion, or almost until fusion, as the case may be. Such cements prepared by fusion are at present manufactured on a commercial scale by three firms : The Société Anonyme des Chaux et Cyinaents de Lafarge et du Teil, the originators of this new type of cement, who started experimenting as far back as 1897, took their patent in 1908, and reached
the commercial stage in 1914, produce Ciment fondu (Registered Trade Mark) at le Teil (Ardèche) by use of a water-jacket, and Ciment Electro-Fondu (Registered Trade Mark) by use of the electric oven at Moutiers (Savoie). Yearly output about 50,000 tons.
Mons. T.J. Guéritte
ALTHOUGH this Conference is to deal chiefly with the properties and uses of cements we think that engineers and users of cement generally will be interested to receive some account of methods investigated by British Portland Cement Manufacturers, with the object of reducing the cost of manufacture, and so-of the utmost importance to the user-of reducing the cost of the finished cement.